Do stuck pixels unstick by themselves?

I got a new TV delivered the other day and have just noticed a green dot when the picture went black. Its fairly central and really annoying me now, during regular viewing I can't see it but every time the screen goes black, or its black in that area I see it.

I've had a quick google and remedies include tapping the area with a blunt object. Since its brand new I don't want to try that.

In the users manual it says 'Occasionally a few non-active pixels may appear on the screen as a fixed blue, green or red point. Please note that this does not affect the performance of your product' implying two things to me. 1) they come and go 2) they won't accept it being returned for this issue.

So on point 1) is it possible for them to just get better by themselves?

It was a fairly cheap TV from a supermarket (own brand) I'm wondering if its worth complaining about or whether I should just keep it and hope for the best.

Tbh I don't fancy the hassle of returning, waiting for a replacement when the replacement could be worse (though as I did say the central location makes this quite annoying).

The central location is critical - I did see somewhere years ago a guide to dead pixels which suggested you could reject (return) a screen for pixels in the middle half.
I also ran a "LCD exerciser" program on a PC connected to a monitor with several dead pixels (you tell it which area to flash down to an individual pixel and it runs in background whilst you continue to use the PC), and most pixels were cured.
But if it's a new TV with distracting dead pixels, return it ASAP.

Officially it's probably 'within specification', but supermarkets have no service or technical facilities, take it back and they will just swap it for another one - they won't even try it.

As 'nvingo' mentioned, there is more concern about duff pixels in the middle 'centre' of the screen - imagine a 4:3 image on the screen displaying a circle in the middle, that's the crucial area.

As a service engineer for a Sony dealer I replace any screen where the customer complains about duff pixels (anywhere on the screen), Sony is a premium product, and any duff pixels is unacceptable. Obviously this doesn't apply to a cheap supermarket set, where it's more likely to be common.

Thanks I'll call and return tomorrow, now worried the replacement will have the same issue but with more stuck pixels but I gotta try cause now I know its there its all I'm looking at when watching TV even though its unnoticeable in light scenes.

Also I've got another question out of general curiosity. What do they do with returned sets that have minor flaws like this, I'd imagine it would be quite expensive to scrap them all.

I've no idea what Tesco's would do with them? - but for 'proper' makes the set would usually be returned to the manufacturer and sent for repair - which in this case would probably be to declare it as 'within specification'. The 'repaired' sets are then sold as 'graded' stock at a lower price, but still with the full manufacturers 12 months warranty.